Automatic strip chamfering machine

Abstract

The invention provides an automatic strip chamfering machine which comprises a feeding end conveying device (1), a middle main machine device (2) connected to the downstream of the feeding end conveying device (1), a discharging end conveying device (3) connected to the downstream of the middle main machine device (2) and an electric control part. The control device is configured to control operation of the feeding end conveying device (1), the middle main machine device (2) and the discharging end conveying device (3), and the feeding end conveying device (1), the middle main machine device (2) and the discharging end conveying device (3) feed workpieces in a conveying roller mode.

Description

Technical Field

[0001] This application relates to the field of machining technology, and in particular to an automatic chamfering machine for strip materials. Background Technology

[0002] As a key basic material for ship hull structure, the chamfering of the strips directly affects the adhesion of anti-rust paint and the crack resistance of the structure, making it an important process to ensure the safety and durability of the hull. Due to the complexity of the hull structure, the strips are characterized by diverse shapes, varying lengths, large processing volume, and high demand for chamfering of free edges, which places stringent requirements on the efficiency and quality of chamfering processing.

[0003] Currently, the chamfering of free edges of strip materials mainly adopts a segmented operation mode of "long-side hydraulic chamfering machine + individual end chamfering". Among them, the long-side chamfering requires manual operation of the hydraulic chamfering machine to complete a series of actions such as pre-positioning of the pressure roller, clamping and releasing of the workpiece; the end chamfering is divided into two methods: manual hand-held tool processing and automated processing by robotic arms. Manual processing is suitable for small batches of simple workpieces, while robotic arm processing is mostly used in scenarios with higher precision requirements.

[0004] However, in existing technical solutions, manual chamfering of long edges is not only inefficient and labor-intensive, but also prone to leaving residual compressive stress inside the strip during hydraulic clamping, posing a potential threat to the stability of the subsequent hull structure. Manual chamfering of ends also suffers from low efficiency and high labor intensity. While robotic arms can improve precision, they are expensive to operate and limited by load and operating range, making them unsuitable for processing large strips. Furthermore, the separate operation of long and end edges results in cumbersome production processes, repetitive loading and unloading, and overall low processing efficiency, failing to meet the rapid processing needs of large-scale strips in hull construction.

[0005] Invention Content

[0006] The purpose of this application is to provide an automatic strip beveling machine to solve or alleviate the problems existing in the prior art.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] An automatic beveling machine for strip materials, comprising:

[0009] Feed end conveyor (1),

[0010] The intermediate main unit (2) is connected downstream of the feed end conveyor (1).

[0011] The discharge end conveying device (3) is connected downstream of the intermediate main unit (2), and

[0012] The electrical control system is configured to control the operation of the infeed conveyor (1), the intermediate main unit (2), and the discharge conveyor (3).

[0013] The feeding end conveying device (1), the intermediate main unit device (2) and the discharging end conveying device (3) all use conveying rollers to feed the workpiece. The feeding end conveying device (1) includes a feeding conveying frame (11), a feeding conveying roller (12), a feeding chain drive device (13), a feeding correction device (14) and a slag cleaning device (15). The intermediate main unit device (2) includes a main unit conveying frame (21), a main unit conveying roller (22), a main unit pressure roller device (23), a main unit chain drive device (24), a main unit correction device (25), a chamfering device frame (26), an end chamfering device (27) and a long straight edge chamfering device (28). The discharging end conveying device (3) includes a discharging conveying frame (31), a discharging conveying roller (32) and a discharging chain drive device (33).

[0014] Optionally, the chain drive device (13A) of the feed end conveying device (1) adopts a variable frequency motor and is configured to adjust the feed speed of the workpiece.

[0015] Optionally, the feeding correction device (14) of the feeding end conveying device (1) is provided with a reference side roller group (141) and a non-reference side roller group (142). The non-reference side roller group (142) is installed on a guide beam (143) and is pushed by a cylinder to complete the strip correction action.

[0016] Optionally, the slag cleaning device (15) of the feed end conveying device (1) is located near the intermediate main unit (2), and includes a grinding disc (151), an adjustable limiting device (152) and a pressure roller device (153). The grinding disc (151) is located below the workpiece to clean the residual slag on the strip. The adjustable limiting device (152) is configured to prevent the grinding disc (151) from excessively grinding and damaging the workpiece. The pressure roller device (153) is configured to provide power for the workpiece feeding.

[0017] Optionally, the intermediate host device (2) is equipped with two sets of devices with the same function, including two sets of host conveyor frame (21), host conveyor roller (22), host pressure roller device (23), host chain drive device (24), host correction device (25), chamfering device frame (26), end chamfering device (27) and long straight edge chamfering device (28), one set is used normally and the other set is spare.

[0018] Optionally, the conveying rollers of the feeding end conveying device (1), the intermediate main unit device (2) and the discharging end conveying device (3) are configured to operate at differential speeds in order to realize the separation of workpieces and the continuous state conversion.

[0019] Optionally, the host chain drive of the intermediate host device (2) is driven by a servo motor and configured to adjust the speed and obtain the basic position of the workpiece feed.

[0020] Optionally, the chamfered frame (26) of the intermediate host device (2) is designed as a "T" shape and configured for use by two devices.

[0021] Optionally, the end edge chamfering device (27) of the intermediate host device (2) includes an electromagnet (271), a cutter head (272), a power head (273), and a three-axis moving device (274). The electromagnet is configured to attract the workpiece, and the three-axis moving device is servo driven and configured to drive the power head and the cutter head to perform contour cutting on the end edge of the workpiece.

[0022] Optionally, the long straight edge chamfering device (28) of the intermediate host device (2) is provided in 4 places, which are responsible for chamfering the upper and lower edges of the two long straight edges respectively. The long straight edge chamfering device responsible for the upper edge includes a cylinder-driven lifting mechanism to adapt to workpieces of different plate thicknesses. The cutter head (272) is provided with two-way pressure / pushing rollers.

[0023] Optionally, the chain drive of the discharge end conveying device (3) is driven by a variable frequency motor.

[0024] Optionally, it also includes an automatic tool changer (4), which includes a circular tool magazine (41) and a tool change clamping device (42). The circular tool magazine (41) is provided with multiple tool disc placement positions 41A. The tool change clamping device (42) includes a servo-driven two-axis moving device (421) and a pneumatic gripper (422).

[0025] Optionally, the electronic control unit is configured to parse the incoming material pattern to obtain the processing trajectory, and combine multiple sensors to determine the position and direction of the incoming strip material, and generate action commands for each component.

[0026] The technical solution provided in this application has the following technical advantages:

[0027] This application uses a conveying roller method to feed workpieces through a feeding end conveying device (1), an intermediate main unit device (2), and a discharging end conveying device (3), and the operation of each device is controlled by an electrical control unit, which realizes the automation of strip material conveying and chamfering process, reduces manual intervention, improves work efficiency, and reduces labor intensity.

[0028] To address the issue of residual compressive stress in the strip material caused by hydraulic clamping, the intermediate main unit (2) uses a pressure roller device (153) in conjunction with a conveying roller for workpiece conveying and positioning, replacing the traditional hydraulic clamping method. This avoids residual compressive stress and eliminates potential risks to the stability of the subsequent hull structure.

[0029] In response to the problems of low efficiency and high labor intensity of manual end chamfering, as well as high cost and difficulty in adapting to large workpieces by robotic arms, the intermediate host device (2) includes an end chamfering device, which can work in conjunction with the long straight edge chamfering device to complete the chamfering of the end edge and the long straight edge on the same equipment. This eliminates the need for manual operation or reliance on expensive robotic arms, reducing equipment investment costs and adapting to the processing needs of large strips.

[0030] To address the problems of cumbersome processes, repetitive loading and unloading, and low overall efficiency caused by separating the long side and the end side, this application connects the feeding end conveyor (1), the intermediate main unit (2), and the discharging end conveyor (3) in sequence to form a continuous processing flow. This allows the strip material to complete the chamfering of the long side and the end side in one conveying process, reducing the number of processes and loading and unloading links, improving the overall processing efficiency, and meeting the needs of rapid processing of large-scale strip materials. Attached Figure Description

[0031] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein:

[0032] Figure 1 This is a schematic diagram of the feeding end conveying device (1) in the automatic strip chamfering machine of this application.

[0033] Figure 2 This is a schematic diagram of the feeding end conveying device (1) (another perspective) in the automatic strip chamfering machine of this application.

[0034] Figure 3 This is a schematic diagram of the corrective component of the feed end conveying device (1) in the automatic strip chamfering machine of this application.

[0035] Figure 4 This is a schematic diagram of the end edge beveling component of the intermediate main unit (2) in the automatic strip beveling machine of this application.

[0036] Figure 5 This is a schematic diagram of the structure of the long straight edge chamfering component of the intermediate main unit (2) in the automatic chamfering machine for strips of this application.

[0037] Figure 6 This is a structural diagram of the long straight edge beveling component (partially enlarged) of the intermediate main unit (2) of the automatic strip beveling machine of this application.

[0038] Figure 7 This is a schematic diagram of the structure of the frame of the intermediate host device (2) of the automatic strip beveling machine of this application.

[0039] Figure 8This is a schematic diagram of the automatic tool changer (4) (tool magazine part) in the automatic strip chamfering machine of this application.

[0040] Figure 9 This is a schematic diagram of the automatic tool changing device (4) (tool changing ring section) in the automatic strip chamfering machine of this application.

[0041] Figure 10 This is a schematic diagram of the discharge end conveying device (3) in the automatic strip chamfering machine of this application.

[0042] Figure 11 This is a schematic diagram of the overall structure of the automatic strip beveling machine of this application. Detailed Implementation

[0043] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0044] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0045] like Figures 1-11 As shown in the embodiment of this application, an automatic strip beveling machine includes:

[0046] Feed end conveyor (1),

[0047] The intermediate main unit (2) is connected downstream of the feed end conveyor (1).

[0048] The discharge end conveying device (3) is connected downstream of the intermediate main unit (2), and

[0049] The electrical control system is configured to control the operation of the infeed conveyor (1), the intermediate main unit (2), and the discharge conveyor (3).

[0050] The feeding end conveying device (1), the intermediate main unit device (2) and the discharging end conveying device (3) all use conveying rollers to feed the workpiece. The feeding end conveying device (1) includes a feeding conveying frame (11), a feeding conveying roller (12), a feeding chain drive device (13), a feeding correction device (14) and a slag cleaning device (15). The intermediate main unit device (2) includes a main unit conveying frame (21), a main unit conveying roller (22), a main unit pressure roller device (23), a main unit chain drive device (24), a main unit correction device (25), a chamfering device frame (26), an end chamfering device (27) and a long straight edge chamfering device (28). The discharging end conveying device (3) includes a discharging conveying frame (31), a discharging conveying roller (32) and a discharging chain drive device (33).

[0051] Optionally, the chain drive device of the feed end conveying device (1) adopts a variable frequency motor and is configured to adjust the feed speed of the workpiece.

[0052] Preferably, in the feed end conveying device (1) of the automatic strip chamfering machine, the variable frequency motor is installed on one side of the feed conveying frame (11) (usually for easy power transmission and without interfering with the workpiece conveying position), and is connected to the drive sprocket of the feed chain transmission device (13) through the transmission component (using sprocket and chain adapter).

[0053] The feeding chain drive device (13) is arranged along the length of the feeding conveyor frame (11). The chain meshes with the sprocket at the end of the feeding conveyor roller (12), driving the feeding conveyor roller (12) to rotate, thereby realizing the feeding of the workpiece on the feeding conveyor frame (11). The variable frequency motor and the feeding chain drive device (13) form a front-to-back connection between power input and transmission in space, together constituting the power system for conveying at the feeding end.

[0054] The power output shaft of the variable frequency motor is connected to the power input end (drive sprocket shaft) of the feeding chain drive device (13) through a rigid connection (such as a coupling), transmitting the rotational motion of the motor to the feeding chain drive device (13); the chain of the feeding chain drive device (13) meshes with the driven sprocket on the feeding conveyor roller (12), driving the feeding conveyor roller (12) to rotate, and then moving the strip workpiece placed on the feeding conveyor roller (12), realizing the sequential transmission of mechanical power from the variable frequency motor to the feeding conveyor roller (12), forming a complete power link for conveying workpieces at the feeding end.

[0055] The automatic strip beveling machine needs to beveling strips of different specifications and processing rhythms. The feed end conveyor (1) serves as the initial conveying link for workpiece processing. The variable frequency motor, in conjunction with the feed chain drive (13), adjusts the feed speed, essentially to adapt to diverse production needs.

[0056] 1. Flexible production adaptation: Different materials and sizes of strips require different feed speeds during chamfering (for example, for thicker and harder strips, feeding too fast can lead to insufficient chamfering and excessive equipment load; for thinner and softer strips, feeding too slowly will reduce production efficiency). The variable frequency motor can precisely change the operating speed of the feed chain drive device (13) by adjusting the output frequency, thereby adjusting the feed speed of the workpiece driven by the feed conveyor roller (12), so that the feed end conveying speed is adapted to the chamfering rhythm of the intermediate main device (2) and the conveying connection of the discharge end conveyor device (3), ensuring the smoothness of the entire production line and the consistency of processing quality.

[0057] 2. Production line coordination and efficiency optimization: When the chamfering machine is running alone or connected with upstream and downstream processes in a production line, the feed speed of the feeding end conveyor (1) can be adjusted by the variable frequency motor, which can flexibly respond to the overall production line rhythm. For example, in online production, when the material speed of the upstream process changes or the intermediate main device (2) temporarily slows down due to tool change / adjustment, the variable frequency motor can quickly adjust the speed of the feeding chain drive device (13), so that the feeding end conveyor (1) can coordinate with the upstream and downstream links, avoid workpiece accumulation or production line idling, improve the overall operating efficiency and resource utilization of the equipment, and ensure the dynamic adaptation and efficient operation of the automatic chamfering process of strip materials from the source of material feeding.

[0058] In summary, the variable frequency motor’s speed regulation characteristics and the stable transmission of the feed chain drive device (13) provide a flexible and adjustable power foundation for the feed end conveying device (1), allowing the strip conveying speed to accurately match the requirements of the entire chamfering process. This is the key technical support for the feed link to achieve flexible and efficient production of the equipment, ensuring the high efficiency and stability of the entire production line.

[0059] Optionally, the feeding correction device (14) of the feeding end conveying device (1) is provided with a reference side roller group (141) and a non-reference side roller group (142). The non-reference side roller group (142) is installed on a guide beam (143) and is pushed by a cylinder to complete the strip correction action.

[0060] Preferably, in the feed end conveying device (1) of the automatic strip chamfering machine, the reference side roller group (141) is installed at one side edge of the feed conveying frame (11) and arranged in a straight line along the conveying direction, serving as the reference guide side for strip conveying.

[0061] The non-reference side roller assembly (142) is mounted on a guide beam (143), which is parallel to the reference side roller assembly (141) and spans above the feed conveyor frame (11). It is connected to the feed conveyor frame (11) through a guide structure (143A) (such as a linear guide form adapted by a slide rail, guide groove, etc.), so that the beam (143) can move in a direction perpendicular to the strip conveying direction. The cylinder is mounted on the feed conveyor frame (11) and is located on one side of the non-reference side roller assembly (142). Its piston rod is connected to the beam (143) to provide power for the movement of the beam (143) and the non-reference side roller assembly (142). All components form a spatial layout of reference constraint and adjustable correction around the strip conveying path on the feed conveyor frame (11).

[0062] The reference side roller assembly (141) is rigidly connected to the feed conveyor frame (11) through a fixed structure such as a bracket. The rollers can rotate freely, providing rolling support for strip conveying and defining the position on one side.

[0063] The non-reference side roller assembly (142) is mounted on the crossbeam (143) via bearings and other components, allowing the rollers to rotate flexibly. The crossbeam (143) is connected to the feeding conveyor frame (11) via guide components (such as slide rail sliders) to achieve guided movement along the vertical conveying direction. The cylinder body is fixed on the feeding conveyor frame (11), and the piston rod extension end is connected to the crossbeam (143). When the cylinder is ventilated, it pushes the crossbeam (143) to move the non-reference side roller assembly (142) closer to or further away from the reference side roller assembly (141), thereby adjusting the clamping and correction state of the strip material. This forms a power transmission and execution link of "cylinder → crossbeam (143) → non-reference side roller assembly (142)", which works in conjunction with the reference side roller assembly (141) to complete the correction operation of the strip material.

[0064] From the overall processing flow of the automatic strip chamfering machine, when the strip is conveyed by the feeding end conveying device (1), the position may be offset due to feeding deviation, conveying vibration, etc. If it is not corrected, it will cause the end edge chamfering device (27) and the long straight edge chamfering device (28) to be unable to accurately align the strip edge when the subsequent intermediate host device (2) chamfers, resulting in uneven chamfering, missing chamfering, or even damage to the equipment.

[0065] The technical essence of the feeding correction device (14) is to construct a strip position correction mechanism of "baseline constraint + active adjustment":

[0066] The reference side roller group (141) serves as a fixed reference, providing a stable one-sided positioning reference for strip conveying;

[0067] The non-reference side roller group (142) relies on the movable crossbeam (143) driven by the cylinder to actively move closer to the reference side or adjust the spacing according to the actual position deviation of the strip (which can be detected by the sensor to form a functional closed loop), apply lateral force to the offset strip, and push it back to the correct conveying path that is parallel and centered with the reference side, so as to ensure that the strip enters the intermediate main unit (2) with a precise posture.

[0068] This mechanism enables the end-edge chamfering device (27) to accurately adsorb the workpiece, the three-axis moving device (274) to precisely follow the shape and cut, and the long straight edge chamfering device (28) to adapt to the width and thickness of the strip for effective chamfering. It ensures the chamfering processing accuracy and equipment operation stability from the source of material feeding, and is a key technical support for realizing automatic and precise chamfering of strips.

[0069] Optionally, the slag cleaning device (15) of the feed end conveying device (1) is located near the intermediate main unit (2), and includes a grinding disc (151), an adjustable limiting device (152) and a pressure roller device (153). The grinding disc (151) is located below the workpiece to clean the residual slag on the strip. The adjustable limiting device (152) is configured to prevent the grinding disc (151) from excessively grinding and damaging the workpiece. The pressure roller device (153) is configured to provide power for the workpiece feeding.

[0070] Preferably, in the feeding end conveying device (1) of the automatic strip chamfering machine, the slag cleaning device (15) is installed as a whole at the end of the feeding conveying frame (11) near the intermediate main unit (2), which is the last conveying link before the workpiece enters the intermediate main unit (2).

[0071] Among them, the grinding disc (151) is horizontally positioned below the gap between the feed conveyor rollers (12), with its grinding surface facing the lower surface of the workpiece to ensure that the strip can contact the residual slag when it passes through; the adjustable limiting device (152) is installed on the side of the grinding disc (151) (usually on both sides perpendicular to the conveying direction), with its limiting end close to the grinding area of ​​the grinding disc (151) to limit the maximum grinding depth of the grinding disc (151); the pressure roller device (153) is located upstream or directly above the grinding disc (151), with the axis of the pressure roller parallel to the axis of the feed conveyor roller (12). After being pressed down, it forms a clamping effect on the workpiece with the feed conveyor roller (12) and maintains an appropriate distance from the grinding disc (151) along the conveying direction (to ensure that the workpiece enters the grinding area smoothly after being pressed).

[0072] The grinding disc (151) is connected to the motor via a drive shaft. The motor is fixed on the bottom support of the feeding conveyor frame (11) and drives the grinding disc (151) to rotate at high speed to achieve the cleaning action.

[0073] The bracket of the adjustable limiting device (152) is rigidly connected to the feeding conveyor frame (11). The limiting rod is engaged with the bracket through a threaded or sliding groove structure. The extension length of the limiting rod can be adjusted manually or electrically, and its end corresponds to the highest grinding position of the grinding disc (151).

[0074] The support of the pressure roller device (153) is fixed on both sides of the feeding conveyor frame (11). The pressure roller shaft is mounted on the support through bearings. The top of the support is connected to a cylinder or spring mechanism to drive the pressure roller to move up and down to adjust the pressure on the workpiece. The pressure roller is linked with the feeding conveyor roller (12) below and rotates synchronously with the workpiece conveying.

[0075] From the overall processing flow of the automatic strip chamfering machine, the surface of the strip is prone to residual cutting slag, oxide scale and other slag during the early processing or handling. If it directly enters the intermediate main unit (2), these slags will cause the wear of the cutter head of the end chamfering device (27) and the long straight edge chamfering device (28) to be aggravated, or cause the workpiece positioning to be offset (such as the electromagnet (271) not being firmly attracted when chamfering the end edge), affecting the chamfering accuracy.

[0076] The technical essence of the slag chute cleaning device (15) is to construct a "pretreatment protection mechanism":

[0077] The residual slag at the bottom of the workpiece is cleaned by high-speed grinding using the grinding disc (151) below, eliminating interference factors for subsequent processing.

[0078] The adjustable limit device (152) limits the grinding depth to prevent the grinding disc (151) from over-cutting the workpiece body (especially for thin-walled strips, it can prevent workpiece deformation or dimensional deviation caused by grinding).

[0079] The pressure roller device (153) presses the workpiece to ensure that the workpiece does not jump or shift during the grinding process, and at the same time provides additional power for the workpiece feed (especially when the grinding disc (151) comes into contact with the workpiece and generates resistance, thus avoiding workpiece conveying stagnation).

[0080] This device, through the synergistic effect of "cleaning, protection, and power assistance", completes surface purification before the workpiece enters the core processing stage (intermediate main unit (2)). This ensures that the cutter head of the intermediate main unit (2) (such as the cutter head (272) of the end edge chamfering device (27)) can accurately contact the edge of the workpiece, reducing processing errors and equipment wear caused by slag discharge. It is an important pre-treatment stage for achieving high-quality chamfering of strip materials, providing a prior guarantee for the stability and accuracy of subsequent chamfering processes.

[0081] Optionally, the intermediate host device (2) is equipped with two sets of devices with the same function, including two sets of host conveyor frame (21), host conveyor roller (22), host pressure roller device (23), host chain drive device (24), host correction device (25), chamfering device frame (26), end chamfering device (27) and long straight edge chamfering device (28), one set is used normally and the other set is spare.

[0082] In the central main unit (2) area of ​​the automatic strip chamfering machine, two sets of devices with the same function and arranged in a mirror image are set up, distributed side by side along the strip conveying direction, sharing an integral frame or independently installed on the same horizontal foundation. The main conveying frame of each set of devices is long and extends along the strip feeding direction. The two sets of frames are mirror symmetrical about the center line of the equipment, and the spacing is adapted to the operation and maintenance needs (avoiding interference and facilitating maintenance).

[0083] In each set of devices, the conveying rollers are evenly distributed on the main conveying frame, with their axes parallel and perpendicular to the strip conveying direction. The conveying rollers of the two sets of devices are at the same height to ensure horizontal conveying of the strip. The pressure roller device (153) is located directly above the conveying roller and is installed on both sides of the main conveying frame via a bracket, corresponding vertically to the conveying roller. The chain drive device is installed on the side of the main conveying frame and connects to the end of the conveying roller to provide power. The correction device is distributed at intervals on both sides of the main conveying frame along the conveying direction, and the correction devices of the two sets of devices are mirror-symmetrical. The chamfering device frame is located in the middle of each set of devices. The end chamfering device corresponds to the end of the strip, and the long straight edge chamfering device corresponds to the long sides of the strip. The two sets of chamfering devices are arranged symmetrically in space.

[0084] Each set of devices has an independent main conveyor frame, which is rigidly connected to the overall frame by anchor bolts; the two ends of the conveyor roller are mounted on the main conveyor frame via bearing seats and can rotate freely; the motor, sprocket, and chain of the chain drive device are mounted on the side bracket of the main conveyor frame, and the chain meshes with the sprocket at the end of the conveyor roller to transmit force; the support of the pressure roller device (153) is rigidly connected to the main conveyor frame, and the pressure roller shaft is connected to the support via bearings. The upper part of the support is connected to a cylinder / hydraulic cylinder to control the lifting and lowering of the pressure roller; the support of the reference side wheel group and the non-reference side roller group (142) of the correction device is fixed to the main conveyor frame, and the crossbeam (143) of the non-reference side roller group (142) is connected to cylinder 142A (mounted on the side of the main conveyor frame); the chamfering device frame is fixed to the main conveyor frame, and the electromagnet, cutter head, power head, and three-axis moving device of the end chamfering device are connected in sequence. The three-axis moving device is mounted at the corresponding position of the chamfering device frame; the components of the long straight edge chamfering device are mounted on the chamfering device frame via supports and are adapted to the long edge processing of strip materials.

[0085] The electrical control systems of the two sets of equipment are independent of each other (including drive and control modules) and support linkage control at the same time: under normal operating conditions, one set of equipment is the "normal use line" and the other set is the "standby line with mirror arrangement". The switching can be achieved quickly through the electrical control part (the standby line can be switched in case of failure, and the two lines can also work together for production).

[0086] From the perspective of the overall operation of the automatic strip beveling machine, large-scale production has high requirements for continuous operation and flexible scheduling. If there is only a single intermediate main unit (2), the production line will have to stop when there is a failure or maintenance, which will affect the progress.

[0087] This solution constructs an efficient production guarantee system through a "dual-line mirror redundancy + independent / linked control" mechanism: the two sets of equipment can operate independently (one line in production, the other on standby / for maintenance) or work in tandem (dual lines in parallel to increase capacity). When the "normal operating line" fails (e.g., cutter head damage, transmission abnormality) or requires maintenance (cutter replacement, parameter adjustment), the electrical control unit quickly switches to the "mirror backup line" to ensure continuous strip feeding and chamfering; at the same time, the two lines can be linked as needed to adapt to large-scale, high-intensity production (e.g., dual lines in parallel when orders surge, doubling capacity).

[0088] In this application, by using a mirrored dual-line system, the risk of downtime caused by the failure of a single unit is resolved, while also supporting dynamic adjustment of production capacity to meet the needs of continuous industrial production, improve equipment reliability and production flexibility, and meet the efficiency and stability requirements of large-scale strip beveling processing.

[0089] Optionally, the conveying rollers of the feeding end conveying device (1), the intermediate main unit device (2) and the discharging end conveying device (3) are configured to operate at differential speeds in order to realize the separation of workpieces and the continuous state conversion.

[0090] Preferably, in the overall layout of the automatic strip chamfering machine, the feed conveying roller (12) of the feed end conveying device (1), the main conveying roller (22) of the intermediate main device (2) and the discharge conveying roller (32) of the discharge end conveying device (3) are arranged sequentially along the strip conveying direction to form a continuous conveying path.

[0091] The feed conveyor roller (12) and the main conveyor roller (22) maintain a preset distance (to ensure that the strip can be smoothly transitioned), and the axes of all conveyor rollers are parallel to each other, and their upper surfaces are on the same horizontal plane, together bearing the strip and guiding it to move in the preset direction.

[0092] From the perspective of the driving position:

[0093] The drive mechanism (feed chain drive device (13) and matching variable frequency motor) of the feed end conveying device (1) is installed on the side of the feed conveying frame (11);

[0094] The drive mechanism (main chain drive device (24) and matching servo motor) of the intermediate main unit (2) is installed on the side of the main unit conveyor frame (21);

[0095] The drive mechanism (discharge chain transmission device (33) and matching variable frequency motor) of the discharge end conveying device (3) is installed on the side of the discharge conveying frame (31).

[0096] The drive components of the three are spatially independent, and coordinated speed regulation is achieved through the electronic control system.

[0097] Specific transmission connection:

[0098] In the feeding end conveying device (1), the feeding conveying roller (12) is installed on the feeding conveying frame (11) through the bearing seat, and the sprockets at the ends of each feeding conveying roller (12) are connected to the drive sprocket on the output shaft of the variable frequency motor through the chain to form a chain drive;

[0099] In the intermediate host device (2), the host conveyor roller (22) is mounted on the host conveyor frame (21) through a bearing seat, and the end sprocket is connected to the drive sprocket on the output shaft of the servo motor through a chain;

[0100] In the discharge end conveying device (3), the installation and transmission method of the discharge conveying roller (32) are the same as those of the feed end conveying device (1), and it is driven by another set of variable frequency motors 32A.

[0101] The drive motors of the three conveying devices are all electrically connected to the electrical control unit. The electrical control unit adjusts the output speed of the motors in the three devices respectively through preset programs or sensor feedback signals, thereby changing the running speed of the corresponding conveying rollers (i.e., achieving differential speed).

[0102] The conveyor rollers maintain the same speed within the same group through chain transmission (e.g., the feed conveyor roller (12) group, the main conveyor roller (22) group, and the discharge conveyor roller (32) group are synchronized). The conveyor rollers of different devices form speed differences through the difference in motor speed.

[0103] Strip production is usually made by processing large plates into strips. The initial state is a continuous strip (multiple strips connected end to end). However, the chamfering process requires each strip to enter the intermediate main unit (2) independently (to avoid mutual interference). After processing, the continuous state needs to be restored to facilitate hoisting and transportation.

[0104] The technical essence of differential speed operation of conveyor rollers is to achieve controllable conversion of the strip state through speed difference:

[0105] 1. Separation state realization: When the continuous strip enters the feeding end conveying device (1), if the speed of the feeding conveying roller (12) is slightly faster than that of the main conveying roller (22), the strip will be "pulled apart" due to the speed difference before entering the intermediate main device (2), so that a gap (i.e. separation state) is generated between the originally connected strips, ensuring that each strip enters the chamfering processing area independently, which facilitates the end chamfering device (27) to accurately position the end;

[0106] 2. Continuous state recovery: After processing, if the speed of the main conveyor roller (22) is slightly faster than that of the discharge conveyor roller (32), the strip will gradually approach each other due to the speed difference between the front and rear when it enters the discharge end conveyor device (3), thus restoring the continuous connection state and facilitating subsequent hoisting and transportation.

[0107] This differential speed mechanism precisely controls the conveying speed of each section through the electronic control part. Without the need for additional mechanical separation / merging devices, it can realize the automatic conversion of strip material between the "continuous → separated → continuous" state. It not only ensures the independence and accuracy of the chamfering processing of the intermediate host device (2) (such as the precise operation of the end edge chamfering device (27) and the long straight edge chamfering device (28), but also meets the requirements of the preceding and following processes for the state of the strip material. It simplifies the equipment structure and improves the automation level of the production line. It is a key collaborative technology for realizing efficient and orderly processing of strip material.

[0108] Optionally, the host chain drive of the intermediate host device (2) is driven by a servo motor and configured to adjust the speed and obtain the basic position of the workpiece feed.

[0109] In the intermediate host unit (2), the servo motor is installed on the side of the host conveyor frame (21) (usually on the non-operating side to avoid interfering with workpiece conveying and chamfering operations), and its output shaft is parallel to the axis of the host conveyor roller (22). The host chain drive device (24) is arranged along the length of the host conveyor frame (21), located on the outer side of the end of the host conveyor roller (22), corresponding to the position of the output shaft of the servo motor.

[0110] The driving sprocket in the main chain drive device (24) is mounted on the output shaft of the servo motor, while the driven sprockets are respectively installed at the ends of each main conveyor roller (22). The driving and driven sprockets are connected by a chain to form a closed transmission chain. Each main conveyor roller (22) is evenly distributed on the main conveyor frame (21), and its axis is perpendicular to the transmission direction of the main chain drive device (24), ensuring that the chain drive can synchronously drive all main conveyor rollers (22) to rotate. At the same time, sensors (such as encoders or position switches) for detecting the workpiece position are installed at the output shaft end of the servo motor or near the main conveyor roller (22), forming a linkage detection relationship with the main chain drive device (24) and the servo motor.

[0111] The servo motor's base is bolted to the side bracket of the main conveyor frame (21). The output shaft is rigidly connected to the drive sprocket of the main chain drive device (24) via a key or expansion sleeve, transmitting the motor's rotational power to the drive sprocket. The chain wraps around the drive sprocket and the driven sprockets at the ends of each main conveyor roller (22), and power transmission is achieved through the meshing of the chain and sprockets, driving all main conveyor rollers (22) to rotate synchronously.

[0112] The servo motor is connected to the electrical control unit via a cable, receiving speed adjustment signals and position control commands from the electrical control unit. Simultaneously, the servo motor's built-in encoder or external position sensor is connected to the electrical control unit via a signal line, providing real-time feedback on the motor's rotation angle and speed. The two ends of the main conveyor roller (22) are mounted on the main conveyor frame (21) via bearing seats. The bearing seats are rigidly connected to the frame, ensuring stable rotation of the main conveyor roller (22) under chain drive, carrying and conveying the workpiece.

[0113] The intermediate main unit (2) is the core area for strip chamfering. It requires precise control of the workpiece feed speed and position to ensure that the end chamfering device (27) and the long straight edge chamfering device (28) can accurately cut the workpiece.

[0114] The technical essence of the servo motor-driven host chain transmission device (24) is to build a collaborative control mechanism of "precise speed regulation + position traceability": On the one hand, the servo motor has a high-precision speed regulation capability, and the speed can be continuously and smoothly adjusted through the instructions of the electronic control part. Then, the power is evenly transmitted to each host conveyor roller (22) through the host chain transmission device (24) to ensure that the workpiece passes through the chamfering processing area at a stable and controllable speed. This precise speed regulation capability can adapt to strips of different materials and different chamfering requirements, and avoid chamfering size deviation caused by speed fluctuations (such as insufficient chamfering due to excessive feed, and excessive cutting due to excessive feed).

[0115] On the other hand, the servo motor can accurately record the number of rotations and angles through the built-in encoder. Combined with the transmission ratio of the main machine chain drive (24) and the diameter of the main machine conveyor roller (22), the electrical control part can reversely calculate the feed distance and real-time position of the workpiece (i.e., the basic position of the workpiece feed). This position information provides a precise reference for the operation of the chamfering device: when the end of the workpiece reaches the processing position of the end chamfering device (27), the electrical control part can control the workpiece to pause feeding and start the end chamfering device (27) to perform contour cutting according to the position signal fed back by the servo motor; for long straight edge chamfering, the position information can ensure that the long straight edge chamfering device (28) moves synchronously with the workpiece feed, ensuring the chamfering consistency of the long edge.

[0116] This integrated control of "speed adjustment + position acquisition" enables the intermediate host device (2) to achieve precise control of the workpiece processing process, which not only ensures the accuracy and quality stability of chamfering, but also provides a reliable timing reference for the coordinated action of various devices such as end chamfering device (27) and long straight edge chamfering device (28). It is the core driving and positioning technology for the automatic chamfering machine of strip material to achieve automated and high-precision processing.

[0117] Optionally, the chamfered frame (26) of the intermediate host device (2) is designed as a "T" shape and configured for use by two devices.

[0118] In the intermediate host unit (2), the chamfering device frame (26) is designed as a "T" structure. As the core support component, its horizontal part (the horizontal bar of the "T") is arranged perpendicular to the strip conveying direction, and its vertical part (the vertical bar of the "T") extends along the conveying direction of one of the devices, forming a stable cross structure that can accommodate the shared needs of two devices.

[0119] The main conveyor frame (21) of the two devices is located at both ends of the transverse part of the chamfering device frame (26), symmetrically distributed, forming a "T" intersection with the longitudinal part. The end chamfering device (27) and long straight edge chamfering device (28) of each device are installed in the area of ​​the chamfering device frame (26) corresponding to the device: the end chamfering device (27) is located at the end of the longitudinal part and both ends of the transverse part, corresponding to the workpiece end position of the two devices; the long straight edge chamfering device (28) is arranged along the extension direction of the transverse and longitudinal parts, respectively corresponding to the long straight edge position of the strip in the two devices, ensuring that the two chamfering devices do not interfere with each other in space and each corresponds to the processing path of its respective device.

[0120] The bottom of the chamfering device frame (26) is rigidly connected to the ground or the overall frame of the intermediate main unit (2) by anchor bolts, ensuring its stability after bearing the end chamfering device (27) and the long straight edge chamfering device (28). The frames of the transverse and longitudinal parts are connected as one piece by welding or high-strength bolts to form an integral structure with strong torsional resistance, ensuring the structural stability during chamfering.

[0121] In the end-edge chamfering devices (27) of the two devices, the electromagnet (271), the cutter head (272), the power head (273), and the three-axis moving device (274) are mounted on the corresponding mounting surfaces of the chamfering device frame (26) via slide rails or brackets. The direction of the slide rails is adapted to the movement trajectory of the workpiece end, ensuring the accuracy of end-edge contour cutting. The four mechanisms (including the cylinder-driven lifting mechanism) of the long straight-edge chamfering device (28) are respectively fixed to the sides of the transverse and longitudinal parts of the chamfering device frame (26) via brackets. The position of the brackets is adjusted according to the strip width of the two devices to ensure that the cutter head (272) can accurately align with the upper and lower edges of the strip, adapting to the chamfering requirements of strips of different specifications. The drive lines and control lines of each chamfering device are arranged along the wiring channels inside the chamfering device frame (26) and connected to the electrical control part to achieve centralized control, simplify the wiring layout, and improve equipment safety.

[0122] In large-scale strip processing scenarios, companies often need to run multiple production lines in parallel to increase capacity. However, configuring a separate chamfering device frame for each production line would result in high equipment costs, large floor space, and redundant and wasteful frame structures.

[0123] The technical essence of the "T"-shaped design of the chamfered frame (26) is to build an intensive support system of "space sharing + function reuse": its horizontal part provides chamfered support for one of the devices along the horizontal distribution, and its vertical part provides support for another device along the vertical distribution. Through the cross-shaped structure, the chamfered devices (27) at the ends and the chamfered devices (28) on the long straight sides of the two devices can share the structural strength and installation space of the same frame, avoiding the duplication of independent frames.

[0124] The core advantages of this design are: on the one hand, it reduces the use of frame materials and floor space (compared to two independent frames, it can save 30%-50% of space) and reduce the overall cost of the equipment; on the other hand, the unified chamfering device frame (26) structure can ensure that the chamfering device installation accuracy (such as horizontality and verticality) of the two equipment is consistent, reduce the processing error caused by frame differences, and facilitate the collaborative production and maintenance of the two equipment (such as unified calibration benchmark and shared spare parts).

[0125] The shared functions achieved through the "T"-shaped layout not only meet the independent chamfering processing needs of the two machines, but also significantly improve the space utilization and cost-effectiveness of the equipment. It is a model of intensive design adapted to large-scale production and provides key structural support for the efficient mass production of automatic strip chamfering machines.

[0126] Optionally, the end edge chamfering device (27) of the intermediate host device (2) includes an electromagnet (271), a cutter head (272), a power head (273), and a three-axis moving device (274). The electromagnet is configured to attract the workpiece, and the three-axis moving device is servo driven and configured to drive the power head and the cutter head to perform contour cutting on the end edge of the workpiece.

[0127] On the chamfering device frame (26) (designed as “T” type) of the intermediate host unit (2), the end chamfering device (27) is arranged at the processing position of the end of the strip. Among them, the electromagnet (271) is installed on one side near the main conveyor roller (22), and its adsorption surface is opposite to the side of the strip end and is on the same horizontal plane to ensure accurate adsorption of the workpiece end; the cutter head (272) is located next to the electromagnet (271), and the cutting edge of the cutter head (272) faces the edge of the strip end and maintains a preset cutting distance with the workpiece end; the power head (273) is connected to the cutter head (272) to provide rotational power to the cutter head (272), and its output shaft coincides with the axis of the cutter head (272); the three-axis moving device (274) is installed on the corresponding mounting surface of the chamfering device frame (26), and the power head (273) is fixed on the execution end of the three-axis moving device (274) so ​​that the cutter head (272) can move along the X, Y and Z directions (corresponding to the length, width and height directions of the strip respectively), and the movement range covers all the edge areas to be processed at the end of the strip.

[0128] From a spatial layout perspective, the electromagnet (271) and the cutter head (272) are distributed back and forth in the strip conveying direction (the electromagnet (271) is close to the workpiece feeding direction, and the cutter head (272) is located in the processing position). The guide rails of the three-axis moving device (274) are distributed along the transverse and longitudinal directions of the chamfering device frame (26) to ensure that the cutter head (272) can flexibly adjust its position according to the shape of the workpiece end.

[0129] The electromagnet (271) is fixed to the chamfering device frame (26) by a bracket. The bracket and the frame are rigidly connected by bolts. The control circuit of the electromagnet (271) is connected to the electronic control part to receive adsorption / release commands. The housing of the power head (273) is fixedly connected to the slider of the three-axis moving device (274). The output shaft of the power head (273) is connected to the shaft end of the cutter head (272) through a coupling to drive the cutter head (272) to rotate at high speed. The three-axis moving device (274) consists of three mutually perpendicular axes. It consists of a straight servo motor, a ball screw, and a guide rail. Its base is rigidly connected to the mounting surface of the chamfering device frame (26). The X-axis guide rail is arranged along the strip conveying direction, the Y-axis guide rail is perpendicular to the X-axis (corresponding to the strip width direction), and the Z-axis guide rail is arranged in the vertical direction (corresponding to the strip height direction). The power head (273) is connected to the Z-axis guide rail through a slider to realize the linkage movement in three directions. The servo motor of the three-axis moving device (274) is connected to the electrical control part through a cable to receive position control signals.

[0130] The edge shape of the strip end may vary due to differences in previous processing (such as non-standard right angles, curved edges, etc.). Traditional fixed-track chamfering devices are difficult to adapt to complex end shapes, and are prone to missed cuts or over-cutting.

[0131] The technical essence of the end chamfering device (27) is to construct a flexible processing mechanism of "precise positioning + adaptive contouring": when the end of the strip is transported to the processing position, the electromagnet (271) is energized under the control of the electrical control part, and uses magnetic force to attract the end of the workpiece, so as to avoid the workpiece from being displaced due to vibration or cutting force during processing, and to provide a stable reference for chamfering; the three-axis moving device (274) is based on the high precision characteristics of servo drive, receives the processing trajectory instructions analyzed by the electrical control part according to the incoming material pattern, and drives the power head (273) and the cutter head (272) to move along the actual contour of the edge of the workpiece end through the coordinated movement of the X, Y and Z axes, so that the cutting edge of the cutter head (272) always fits the edge to be processed, and realizes contour cutting.

[0132] It is evident that the attraction of the electromagnet (271) ensures that the workpiece remains in a fixed position during processing, solving the problem of workpiece deformation that may be caused by traditional mechanical clamping. The three-axis servo-driven moving device gives the cutter head (272) flexible trajectory following capability, which can be adapted to strip ends of different shapes, ensuring the consistency and accuracy of edge chamfering. Through the synergy of "positioning and contour cutting", the edge chamfering device (27) can accurately process the complex edges of strip ends, improve the chamfering quality, and is the core functional module of the intermediate main unit (2) to achieve high-quality edge processing, providing key technical support for the overall equipment to adapt to diverse strip processing needs.

[0133] Optionally, the long straight edge chamfering device (28) of the intermediate host device (2) is provided in 4 places, which are responsible for chamfering the upper and lower edges of the two long straight edges respectively. The long straight edge chamfering device responsible for the upper edge includes a cylinder-driven lifting mechanism to adapt to workpieces of different plate thicknesses. The cutter head (272) is provided with two-way pressure / pushing rollers.

[0134] Preferably, on the chamfering device frame (26) (designed as “T” type) of the intermediate host device (2), four long straight edge chamfering devices (28) are distributed along the strip conveying direction, respectively corresponding to the upper and lower edges of the two long straight edges of the strip. Among them, the upper and lower long straight edge chamfering devices (28) responsible for the same long straight edge are in an up-down correspondence and are symmetrically distributed on the upper and lower surfaces of the strip. The long straight edge chamfering devices (28) of the two long straight edges are arranged opposite to each other in the strip width direction, respectively located on the two sides of the strip edge, to ensure that all long straight edge edges to be chamfered are covered.

[0135] The cutting edge of the cutter head (272) faces the edge of the strip and maintains a preset cutting angle with the edge (usually 45°, which can be adjusted according to the chamfering requirements); the two-way pressure / approaching rollers are installed on both sides of the cutter head (272), and the roller surfaces are in contact with the side and upper and lower surfaces of the strip to ensure that the cutter head (272) always fits the edge; the long straight edge chamfering device (28) responsible only for the upper edge is equipped with a cylinder-driven lifting mechanism. This mechanism is located above the cutter head (272) and its extension and retraction direction is perpendicular to the strip conveying plane (i.e., perpendicular to the conveying plane formed by the main conveying roller (22)). It is used to adjust the height of the upper edge cutter head (272) to adapt to strips of different thicknesses.

[0136] From a spatial perspective, four long straight edge chamfering devices (28) are arranged sequentially along the strip conveying path, forming a processing connection with the end edge chamfering device (27) (the strip first passes through the long straight edge chamfering and then enters the end edge chamfering area), and remain parallel to the conveying trajectory of the main conveying roller (22), ensuring that when the strip passes smoothly under the drive of the main conveying roller (22), the long straight edge can be cut throughout the entire process, achieving full-length chamfering coverage.

[0137] The base of the long straight edge chamfering device (28) is fixed to the side of the chamfering device frame (26) by bolts. A guide rail extending along the width direction of the strip is installed on the base. The cutter head (272) is connected to the power head through the power shaft. The power head is fixed on the slider. The slider cooperates with the guide rail of the base and can be finely adjusted along the width direction to ensure that the cutter head (272) is accurately aligned with the edge. The two-way pressure / adjustment rollers are installed on both sides of the cutter head (272) through the bracket. The roller shaft is parallel to the shaft of the cutter head (272). The roller surface can rotate synchronously with the movement of the strip to form a flexible fit.

[0138] In the lifting mechanism driven by the cylinder of the upper edge chamfering device (28), the cylinder body is fixed on the upper crossbeam of the chamfering device frame (26), and the end of the piston rod is connected to the base of the upper edge device. The cylinder extension and retraction drives the entire upper edge device to rise and fall vertically. The base of the lower edge chamfering device (28) is directly and rigidly connected to the chamfering device frame (26) at a fixed height. All the power heads of the cutter heads (272), the cylinders of the lifting mechanism, and the control elements are connected to the electrical control part through wiring to receive action commands such as speed control and height adjustment.

[0139] The long straight edge of the strip is the core area for chamfering, and its edge quality directly affects the assembly accuracy of the hull structure and the effect of rust prevention and painting. However, in actual processing, there are differences in the thickness of the strip (for example, the thickness of the strip used for the hull may range from 6 to 50 mm), and it is easy to cause slight displacement due to vibration during transportation. Traditional fixed-position chamfering devices cannot simultaneously meet the requirements of "thickness matching" and "fitting accuracy".

[0140] The technical essence of the long straight edge chamfering device (28) is to construct a continuous processing mechanism of "full edge coverage + plate thickness self-adaptation + dynamic bonding":

[0141] 1. Full edge coverage: The four devices correspond to the upper and lower edges of the two long straight edges respectively, avoiding the problem of missed cutting in traditional single devices, ensuring that all edges of the long straight edges can be chamfered, meeting the anti-crack and anti-rust painting requirements of the hull strips;

[0142] 2. Thickness self-adaptation: The cylinder-driven lifting mechanism of the upper edge device can adjust the height according to the thickness of the strip (preset by the electronic control part in combination with the incoming material parameters, or detected in real time by the thickness sensor). When the thickness increases, the cylinder piston rod extends, driving the upper edge cutter head (272) to rise, ensuring that the cutting edge is always aligned with the upper edge; when the thickness decreases, the reverse action is performed, solving the problem of universal processing of strips with different thicknesses.

[0143] 3. Dynamic fit: The two-way pressure / support rollers always fit the surface and side of the strip with elastic pressure. On the one hand, the position of the cutter head (272) can be adjusted synchronously with the slight deviation of the strip (such as when the strip is conveyed off course, the support rollers are pushed by force to push the slider along the guide rail for fine adjustment). On the other hand, it can suppress the influence of strip vibration on cutting, ensure stable contact between the cutter head (272) and the edge, and avoid uneven cutting depth.

[0144] Compared with traditional fixed devices, this structure not only improves the equipment's compatibility with multiple specifications of strips, but also ensures the chamfering accuracy and consistency. It is the core module of the intermediate main unit (2) to realize large-scale, multi-plate thickness strip processing, and provides key technical support for the "automation, high quality and versatility" of hull strip chamfering.

[0145] Optionally, the chain drive of the discharge end conveying device (3) is driven by a variable frequency motor.

[0146] Preferably, in the discharge end conveying device (3) of the automatic strip chamfering machine, the variable frequency motor is installed on the side of the discharge conveying frame (31) (usually on the side opposite to the operating surface to avoid interfering with workpiece output and subsequent process connection), and its output shaft direction is parallel to the axis of the discharge conveying roller (32), forming a transverse layout for power input. The discharge chain drive device (33) extends along the length direction of the discharge conveying frame (31), located on the outer side of the end of the discharge conveying roller (32), corresponding to the position of the output shaft of the variable frequency motor, forming a longitudinal link for power transmission.

[0147] Specifically, the output shaft of the variable frequency motor is aligned with the drive sprocket of the discharge chain drive device (33). The drive sprocket is connected to the driven sprocket at the end of the discharge conveyor roller (32) via a chain. The chain forms a closed loop around the drive sprocket and multiple driven sprockets. The discharge conveyor rollers (32) are evenly distributed on the discharge conveyor frame (31), with their axes perpendicular to the chain drive direction and their upper surfaces remaining horizontal. They collectively support the strip material processed by the intermediate main unit (2). The variable frequency motor and the discharge chain drive device (33) form a vertical connection relationship of "lateral input - longitudinal transmission" in space, ensuring that power can be efficiently transmitted to all discharge conveyor rollers (32).

[0148] The base of the variable frequency motor is fixed to the reinforcing bracket on the side of the discharge conveyor frame (31) by bolts. The bracket is welded to the discharge conveyor frame (31) to ensure the stability of the motor during operation. The motor output shaft is rigidly fixed to the drive sprocket by a key connection, and the rotational power is directly transmitted to the drive sprocket. In the discharge chain drive device (33), the chain meshes with the drive sprocket and the driven sprockets at the ends of each discharge conveyor roller (32). Power transmission is achieved through the meshing of the chain links and sprocket teeth, driving all discharge conveyor rollers (32) to rotate synchronously.

[0149] The two ends of the discharge conveyor roller (32) are mounted on the crossbeam of the discharge conveyor frame (31) through bearing seats. The bearing seats are bolted to the crossbeam to ensure that the discharge conveyor roller (32) can rotate flexibly under chain drive and that the axis remains parallel. The control cable of the variable frequency motor is connected to the electrical control section and forms a linkage with the control system of the intermediate main unit (2) and the feeding end conveyor (1), receiving speed adjustment commands and feeding back the operating status.

[0150] As the final conveying link in strip processing, the discharge end needs to be precisely matched with the processing rhythm of the intermediate host device (2) and the receiving speed of downstream processes (such as hoisting and stacking), while also meeting the output requirements of strips of different specifications.

[0151] The technical essence of using a variable frequency motor 33A to drive the discharge chain transmission device (33) is to build a "flexible output + production line collaboration" end-to-end adaptation mechanism: the variable frequency motor can adjust the output frequency through the electronic control part, change the running speed of the discharge chain transmission device (33), and then adjust the linear speed of the discharge conveying roller (32), so that the discharge end conveying speed can flexibly adapt to the processing progress of the intermediate host (for example, when the intermediate host slows down due to tool change, the discharge end can decelerate synchronously to avoid workpiece accumulation; when the intermediate host speeds up, the discharge end can also respond quickly to prevent conveying lag), and realize the smooth transition of the workpiece from the processing state to the output state.

[0152] For downstream processes, different strip processing methods (such as manual sampling requiring low speed and automatic stacking requiring uniform speed) have different requirements for conveying speed. The speed regulation capability of the variable frequency motor can meet diverse needs and avoid strip collisions and misalignments caused by speed mismatch. In addition, the discharge chain drive device (33) can ensure the synchronous operation of multiple discharge conveying rollers (32), ensuring that the strip maintains a stable posture during the output process and preventing damage to the processed edges caused by uneven conveying.

[0153] This mechanism achieves dynamic coordination between the discharge end and the upstream and downstream processes through frequency conversion speed regulation, which not only ensures the stability and safety of strip output, but also improves the flexibility and efficiency of the entire production line. It is an important end support for the automatic strip chamfering machine to achieve full-process automation and intelligence.

[0154] Optionally, it also includes an automatic tool changer (4), which includes a circular tool magazine (41) and a tool change clamping device (42). The circular tool magazine (41) is provided with multiple tool disc placement positions, and the tool change clamping device (42) includes a servo-driven two-axis moving device (421) and a pneumatic gripper (422).

[0155] The automatic tool changer (4) is arranged in the area close to the chamfering device frame (26) of the automatic chamfering machine in the middle of the main machine (2), without affecting the conveying path of the strip on the main conveyor roller (22) and the processing operation of the end chamfering device (27) and the long straight edge chamfering device (28).

[0156] The circular tool magazine (41) has a ring structure and is installed horizontally or vertically on an independent bracket. Multiple tool disc placement positions are evenly distributed on its circumference. Each position corresponds to the tool disc (272) model (such as different cutting angles and tool discs adapted to different plate thicknesses) required by the middle edge chamfering device (27) or long straight edge chamfering device (28) of the intermediate main unit (2). The tool disc placement direction is consistent with the actual installation direction, which facilitates quick loading and unloading and meets the tool changing requirements of chamfering processing of multiple specifications.

[0157] The tool changer and clamping device (42) is located between the circular tool magazine (41) and the chamfering device of the intermediate main unit (2). The guide rails of its servo-driven two-axis moving device (421) (usually X-axis and Z-axis, or X-axis and Y-axis) are arranged along the direction close to the circular tool magazine (41) and the chamfering device. The moving range covers all tool head placement positions of the circular tool magazine (41) and the installation positions of the tool heads (272) in the end edge chamfering device (27) and the long straight edge chamfering device (28). The pneumatic gripper (422) is installed at the execution end of the two-axis moving device (421). The opening and closing direction of the gripper is consistent with the radial direction of the tool head (272), which can accurately clamp the central axis or edge positioning structure of the tool head (272) to ensure gripping stability.

[0158] From a spatial layout perspective, the circular tool magazine (41) and the tool changing clamping device (42) form a close-range cooperation relationship of "storage and transfer". The moving path of the tool changing clamping device (42) avoids the working area of ​​the main machine conveying roller (22) and the chamfering device, ensuring that the tool changing process does not interfere with the strip processing process and ensuring production continuity.

[0159] The ring frame of the circular tool magazine (41) is fixed to the ground or the auxiliary frame of the intermediate main unit (2) by a bracket. The tool disc placement position on the frame is provided with a positioning pin and a locking mechanism, which can securely fix the spare tool disc (272) in the preset position to prevent shaking or falling off. If it is a rotary circular tool magazine (41), the ring frame is also connected to a drive motor, which can drive the rotation around the central axis to rotate the target tool disc (272) to the tool picking position of the tool changing clamping device (42) to improve the tool changing efficiency.

[0160] In the tool changer clamping device (42), the X-axis guide rail base of the two-axis moving device (421) is connected to the ground or a fixed frame, and the Z-axis (or Y-axis) guide rail slider is rigidly connected to the X-axis slider to form a cross-shaped moving structure; the servo motor is connected to the ball screw through a coupling, and the screw nut is fixed to the slider, driving the slider to move precisely along the guide rail to ensure the tool change positioning accuracy. The cylinder body of the pneumatic gripper (422) is connected to the end slider of the two-axis moving device (421), and the gripper's fingers are linked to the cylinder piston rod through a pin. The opening and closing of the gripper is controlled by the air circuit to realize the gripping and release of the tool disc (272).

[0161] The control circuit of the automatic tool changer (4) is connected to the electrical control section. The tool head position signal of the loop tool magazine (41), the real-time position signal of the two-axis moving device (421) and the opening and closing status signal of the pneumatic gripper (422) are all fed back to the electrical control section to form a closed-loop control.

[0162] The cutter head (272) of the intermediate host device (2) will wear out after long-term processing and needs to be replaced regularly to ensure the chamfering accuracy. Furthermore, if the intermediate host device (2) is equipped with two sets of devices with the same function, or if two devices share the chamfering device frame (26), then the number of cutter heads (272) will be large. Manually changing the cutter head is not only time-consuming and laborious (requiring machine shutdown for disassembly and calibration), but will also cause the production line to stop, affecting efficiency.

[0163] The technical essence of the automatic tool changer (4) is to construct a tool changing mechanism that combines "efficient storage + precise transfer + automated control":

[0164] High-efficiency storage: Through the ring layout of the ring tool magazine (41), multiple types of tool heads (272) are centrally stored, saving space and making management easier, without the need for frequent manual handling and storage of tool heads;

[0165] Precise transfer: The two-axis moving device (421) relies on servo drive to achieve high-precision movement (positioning error can be controlled within 0.1mm). Combined with the stable gripping of the pneumatic gripper (422), it ensures the precise installation of the tool head (272) from the tool magazine to the chamfering device, avoiding the decrease in chamfering accuracy caused by manual installation deviation.

[0166] Automated control: Through linkage with the electrical control unit, the tool changing process can be automatically triggered according to the wear degree of the cutter head (272) (e.g., by judging through processing time and current feedback) or the processing specification switching requirements, without manual intervention, reducing downtime (the tool changing efficiency is 5-10 times higher than manual).

[0167] Through the fully automated process of "storage, grabbing, transporting and installing", the automatic tool changer (4) achieves high efficiency and precision in the replacement of the tool head (272): on the one hand, it replaces manual tool changing and avoids problems such as long downtime and large installation errors caused by manual operation; on the other hand, it adapts to the multi-line parallel (claim 5) and multi-device sharing (claim 8) scenarios of the intermediate host device (2), meets the continuous tool changing requirements of large-scale and multi-specification strip processing, and is the key technical support for the automatic strip chamfering machine to adapt to high-intensity and continuous production, significantly improving the automation level and production efficiency of the equipment.

[0168] Optionally, the electronic control unit is configured to parse the incoming material pattern to obtain the processing trajectory, and combine multiple sensors to determine the position and direction of the incoming strip material, and generate action commands for each component.

[0169] Preferably, in the automatic strip beveling machine, the electrical control part is usually installed in the form of a control cabinet on the side of the equipment (such as the side of the operating surface near the central host device (2)) or embedded in the independent space of the overall frame of the equipment. This is convenient for operators to observe and operate, and it is also far away from the dust and vibration of the processing area, avoiding the interference of environmental factors on electrical components.

[0170] Multiple sensors used to determine the position and orientation of the incoming strip are functionally distributed in key locations of the equipment, perfectly matching the feature of "combining multiple sensors to determine the position and orientation of the incoming strip" in claim 13:

[0171] Position detection sensors (such as laser displacement sensors, photoelectric switches): installed at the inlet of the feed end conveying device (1) and the feed port of the intermediate host device (2), with the detection direction perpendicular to the strip conveying plane or along the conveying direction, used to capture the edge position of the strip (to determine whether it deviates from the center line of the feed conveying roller (12)) and the end coordinates (to provide processing trigger signals for the end chamfering device (27));

[0172] Orientation recognition sensor (such as vision sensor, encoder): installed above or to the side of the feeding end conveying device (1), with the lens facing the upper surface or side of the strip, used to collect the outline image of the strip (identify the end shape) and the conveying angle (determine whether there is skew), providing an adjustment basis for the feeding correction device (14).

[0173] The sensors are connected to the electrical control cabinet via shielded cables, which are arranged along the cable trays of the equipment frame to avoid interference with moving parts such as the feed conveyor roller (12) and the main pressure roller device (23). The control lines of the electrical control part and each execution component (such as the variable frequency motor of the feed chain drive device (13), the servo motor of the three-axis moving device (274), the cylinder of the feed correction device (14), the electromagnet (271), etc.) are also centrally connected through the cable trays to form an orderly electrical connection network, thereby improving the safety and maintenance convenience of the equipment.

[0174] The control cabinet of the electrical control section contains core components such as a central processing unit (CPU), PLC module, motion control card, relays, and power supply module. These components are connected through an internal bus to form the core unit for data processing and command output.

[0175] Central Processing Unit (CPU): As the "decision center", it is responsible for analyzing incoming material graphics (such as CAD drawings or strip outline data scanned in the early stage), processing sensor feedback signals, and coordinating the work of various modules;

[0176] Motion control card: It is specifically responsible for controlling the running trajectory of the servo motor, such as the three-axis moving device (274) of the end edge chamfering device (27) and the two-axis moving device (421) of the automatic tool changer (4), to ensure the moving accuracy of the tool head;

[0177] PLC module: responsible for controlling switching actions, such as the extension and retraction of the cylinder of the feeding correction device (14), the attraction / release of the electromagnet (271), and the cylinder action of the lifting mechanism of the long straight edge chamfering device (28).

[0178] Relays and power modules: provide stable power to various actuators, and isolate high-voltage and low-voltage circuits through relays to ensure the safety of control circuits.

[0179] 1. Signal Input: The position and direction signals from external sensors are connected to the input module of the control cabinet through shielded cables, converting analog / digital signals into electrical signals and transmitting them to the central processing unit;

[0180] 2. Data processing: The central processing unit combines the analyzed incoming material graphic (extracting parameters such as strip length, width, plate thickness, and end shape) to generate the contour cutting trajectory of the end chamfering device (27) and the height adjustment parameters of the long straight edge chamfering device (28); at the same time, it compares the actual position detected by the sensor with the theoretical position and calculates the adjustment amount of the feeding correction device (14) and the differential speed parameters of each conveying device.

[0181] 3. Command output: The central processing unit outputs the trajectory command of the servo motor (such as the X / Y / Z axis movement signal of the three-axis moving device (274)) through the motion control card, and outputs the switch command (such as the speed signal of the variable frequency motor of the feeding chain drive device (13) and the opening and closing signal of the pneumatic gripper (422)) through the PLC module;

[0182] 4. Closed-loop feedback: Feedback signals from each actuator (such as the rotation angle of the servo motor, the speed of the variable frequency motor, and the extension / retraction position of the cylinder) are transmitted back to the electronic control unit via cables. The central processing unit corrects the instructions in real time based on the feedback to ensure the accuracy of the action.

[0183] The mechanical components of the automatic strip chamfering machine, such as the feeding end conveying device (1), the intermediate main unit device (2), and the automatic tool changing device (4), need to work together according to the preset logic (such as first correcting deviation, then cleaning up the slag, and finally chamfering). The processing parameters of strips with different specifications (such as plate thickness of 6-50mm) and different initial states (such as curved ends and skewed conveying) vary greatly. Manual setting is not only inefficient, but also prone to deviation in chamfering dimensions due to misjudgment.

[0184] The core technology of the electronic control system is to build an automated central system that integrates "intelligent sensing, precise decision-making, and collaborative control."

[0185] 1. Intelligent sensing: Real-time capture of the position, orientation, and contour information of the strip through multiple sensors, eliminating errors from manual observation and adapting to individual differences in the strip;

[0186] 2. Precise decision-making: Based on the analysis of incoming material graphics and sensor data, the processing trajectory (such as the cutting path of the cutter head (272)) is automatically generated and the parameters (such as the height of the cylinder-driven lifting mechanism and the differential speed ratio of the conveying rollers) are adjusted without the need for manual programming;

[0187] 3. Collaborative control: By dividing the work of the motion control card and the PLC module, the timing of the actions of each component is ensured to be accurate (e.g., when the end edge chamfering device (27) adsorbs the workpiece, the main conveyor roller (22) pauses synchronously; when changing the tool, the long straight edge chamfering device (28) automatically avoids it), thus avoiding mechanical interference.

[0188] The electrical control system integrates scattered mechanical components into an organically coordinated automated system through closed-loop control of "sensing-decision-execution-feedback". It is the core support for the automatic strip chamfering machine to achieve high precision (chamfering error ≤0.1mm), high efficiency (changeover time reduced by 80%), and high flexibility (adaptable to various strip specifications) processing, and it is also a concentrated manifestation of the equipment's intelligence level.

[0189] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bar automatic chamfering machine characterized by comprising: The application relates to a device for processing workpieces, comprising: a feeding end conveying device (1), an intermediate main machine device (2) connected downstream of the feeding end conveying device (1), a discharging end conveying device (3) connected downstream of the intermediate main machine device (2), and an electric control part configured to control the operation of the feeding end conveying device (1), the intermediate main machine device (2) and the discharging end conveying device (3), wherein the feeding end conveying device (1), the intermediate main machine device (2) and the discharging end conveying device (3) all adopt a conveying roller mode to feed workpieces, the feeding end conveying device (1) comprises a feeding conveying frame body (11), feeding conveying rollers (12), a feeding chain transmission device (13), a feeding deviation rectifying device (14) and a slag cleaning device (15), the intermediate main machine device (2) comprises a main machine conveying frame body (21), main machine conveying rollers (22), a main machine pressing roller device (23), a main machine chain transmission device (24), a main machine deviation rectifying device (25), an edge chamfering device frame body (26), an end edge chamfering device (27) and a long straight edge chamfering device (28), and the discharging end conveying device (3) comprises a discharging conveying frame (31), discharging conveying rollers (32) and a discharging chain transmission device (33).

2. The strip automatic chamfering machine according to claim 1, characterized in that, The driving device of the chain transmission device of the feeding end conveying device (1) adopts a variable frequency motor and is configured to adjust the feeding speed of the workpieces.

3. The strip automatic chamfering machine according to claim 1, characterized in that, The feeding deviation rectifying device (14) of the feeding end conveying device (1) is provided with a reference side roller set (141) and a non-reference side roller set (142), the non-reference side roller set (142) is installed on a horizontal beam (143) with a guide and is pushed by a cylinder to complete the deviation rectifying action of the strip material.

4. The bar automatic chamfering machine according to claim 1, characterized in that, The slag cleaning device (15) of the feeding end conveying device (1) is arranged close to the intermediate main machine device (2) and comprises a grinding piece (151), an adjustable limiting device (152) and a pressing roller device (153), the grinding piece (151) is arranged below the workpieces to clean the residual slag on the strip material, the adjustable limiting device (152) is configured to prevent the grinding piece (151) from excessively grinding and damaging the workpieces, and the pressing roller device (153) is configured to provide power for the workpiece feeding.

5. The bar automatic chamfering machine according to claim 1, characterized in that, The intermediate main machine device (2) is provided with two sets of functionally identical devices, including two sets of main machine conveying frame bodies (21), main machine conveying rollers (22), main machine pressing roller devices (23), main machine chain transmission devices (24), main machine deviation rectifying devices (25), edge chamfering device frame bodies (26), end edge chamfering devices (27) and long straight edge chamfering devices (28), one set of which is normally used and the other set of which is standby.

6. The bar automatic chamfering machine according to claim 1, characterized in that, The conveying rollers of the feeding end conveying device (1), the intermediate main machine device (2) and the discharging end conveying device (3) are configured to operate at different speeds to realize the separation and continuous state conversion of the workpieces.

7. The bar automatic chamfering machine according to claim 1, characterized in that, The main machine chain transmission device of the intermediate main machine device (2) is driven by a servo motor and is configured to adjust the speed and obtain the basic position of the workpiece feeding.

8. The bar automatic chamfering machine according to claim 1, characterized in that, The edge chamfering device frame body (26) of the intermediate main machine device (2) is designed as a "T" type and is configured to be shared by two devices.

9. The bar automatic chamfering machine according to claim 1, characterized in that, The end edge chamfering device (27) of the intermediate host device (2) comprises an electromagnet (271), a cutter head (272), a power head (273) and a three-axis moving device (274), the electromagnet is configured to adsorb a workpiece, the three-axis moving device is driven by a servo motor and is configured to drive the power head and the cutter head to perform profile cutting on the end edge of the workpiece.

10. The strip automatic chamfering machine according to claim 1, characterized in that, The long straight edge chamfering device (28) of the intermediate host device (2) is provided with four devices, which are respectively responsible for the chamfering work of the upper and lower edges of the two long straight edges, wherein the long straight edge chamfering device responsible for the upper edge comprises a lifting mechanism driven by a pneumatic cylinder to adapt to workpieces with different thicknesses, and the cutter head (272) is provided with bidirectional pressing / wheel pressing wheels (2721).

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